中文摘要：

针对具有射击门体制的坦克武器系统，探讨了射击门对首发弹药落点分布的影响。在将样本空间网格化的基础上，利用超速、欠速概率转移阵，导出了击发诸元误差在射击门内的近似分布，并由此获得首发弹药在迎弹面上的落点分布。通过数值仿真分析，演绎了炮控误差的相关系数对击发诸元误差分布及首发弹药落点分布的影响，得出了相关系数越小，首发弹药落点分布越往散布中心集中的结论。

英文摘要：

Aimed at tank weapon system with shooting gate system, the effect of shooting gate on impact point distribution of first shell was discussed. Based on gridding sample space, with the help of faster transition probability matrix and the slower transition probability matrix, the approximative distribution of hitting data error inside the shooting gate were deduced, thus by means of these data, impact point distribution of first shell on the plane toward the shell was obtained. Through numerical simulation and analysis, the effects of the corresponding coefficient of gun control error on hitting data error distribution and impact point distribution of first shell were demonstrated, and the results showed that the less the corresponding coefficient is, the more centralized the impact point distribution of first shell shall be to- wards to dispersion centre.